Ramtex Overseas Pvt. Ltd. A part of JV Group offers Glasswin System. Ramtex Overseas Pvt. Ltd offers UPVC glass. The Glasswin system is available with a 58 millimeter installation depth. This sash can be recombined with system Energy and Gold Asea System. All frame, transom, and floating mullions for these systems can be used. GlassWin System is the adhesive joint between the glass and the sash frame of uPVC. The flexible joint between the GassWin sash and the stepped insulated glass transmits forces for the permanent static reinforcement of the sash frame.